The voices in his head. ;-)
The Welsh were fed up with 'Brits' (more often) decimating their small towns and villages by buying up properties as holiday homes and only using them 2 weeks a year. Then I believe they changed the rules, but only after burning some Brit owned properties down. ;-(
They, (like many of the Scots and Irish) don't really like being governed by England / London, even *if* we (or the EU etc) are actually funding them quite well.
This is quite typical of the great unwashed not having any clue about the bigger picture and being enticed (by ignorance, lack of interest / education) to bite the hand that feeds them.
You just need to find a couple of sore points and write a (fantasy) fix on the side of a bus and the chances are you will sway the vote in your favour.
"We send 350M sheep to London every week, let's eat them ourselves instead!"
(It doesn't matter if the number of sheep is far fewer, they couldn't eat them all, it would be more difficult / expensive to sell them elsewhere or that London pays good money for them, the mud has stuck).
Cheers, T i m